Hot flashes .. Are they a symptom pregnancy?

Carolyn
Af due the 11/26  .. Lately I have been having hot flashes like crazy I think .. I can't get comfortable ether I'm kinda cold or really hot and can't stand to have pants on lol ... 
Is this a symptom of pregnancy? 
I'm only 26 btw lol so I don't think it's menopausal ..